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From: "Li, Xiaoyun" <xiaoyun.li@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"Xia, Chenbo" <chenbo.xia@intel.com>,
	"amorenoz@redhat.com" <amorenoz@redhat.com>,
	"david.marchand@redhat.com" <david.marchand@redhat.com>,
	"andrew.rybchenko@oktetlabs.ru" <andrew.rybchenko@oktetlabs.ru>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	"michaelba@nvidia.com" <michaelba@nvidia.com>,
	"viacheslavo@nvidia.com" <viacheslavo@nvidia.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
	"nelio.laranjeiro@6wind.com" <nelio.laranjeiro@6wind.com>,
	"yvugenfi@redhat.com" <yvugenfi@redhat.com>,
	"ybendito@redhat.com" <ybendito@redhat.com>
Subject: Re: [dpdk-dev] [PATCH v2 2/5] app/testpmd: fix RSS key length
Date: Wed, 22 Sep 2021 11:25:22 +0000	[thread overview]
Message-ID: <DM4PR11MB5534C916BAB008B96FA0CA6499A29@DM4PR11MB5534.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210922095742.229262-3-maxime.coquelin@redhat.com>

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Wednesday, September 22, 2021 17:58
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>;
> amorenoz@redhat.com; david.marchand@redhat.com;
> andrew.rybchenko@oktetlabs.ru; Yigit, Ferruh <ferruh.yigit@intel.com>;
> michaelba@nvidia.com; viacheslavo@nvidia.com; Li, Xiaoyun
> <xiaoyun.li@intel.com>
> Cc: stable@dpdk.org; nelio.laranjeiro@6wind.com; yvugenfi@redhat.com;
> ybendito@redhat.com; Maxime Coquelin <maxime.coquelin@redhat.com>
> Subject: [PATCH v2 2/5] app/testpmd: fix RSS key length
> 
> port_rss_hash_key_update() initializes rss_conf with the RSS key configuration
> provided  by the user, but it calls
> rte_eth_dev_rss_hash_conf_get() before calling rte_eth_dev_rss_hash_update(),
> which overrides the parsed RSS config.
> 
> While the RSS key value is set again after, this is not the case of the key length. It
> could cause out of bounds access if the key length parsed is smaller than the one
> read from rte_eth_dev_rss_hash_conf_get().
> 
> This patch restores the key length before the
> rte_eth_dev_rss_hash_update() call to ensure the RSS key value/length pair is
> consistent.
> 
> Fixes: 8205e241b2b0 ("app/testpmd: add missing type to RSS hash commands")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  app/test-pmd/config.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c index
> 9c66329e96..611965769c 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -2854,7 +2854,7 @@ port_rss_hash_key_update(portid_t port_id, char
> rss_type[], uint8_t *hash_key,
>  	unsigned int i;
> 
>  	rss_conf.rss_key = NULL;
> -	rss_conf.rss_key_len = hash_key_len;
> +	rss_conf.rss_key_len = 0;
>  	rss_conf.rss_hf = 0;
>  	for (i = 0; rss_type_table[i].str; i++) {
>  		if (!strcmp(rss_type_table[i].str, rss_type)) @@ -2863,6 +2863,7
> @@ port_rss_hash_key_update(portid_t port_id, char rss_type[], uint8_t
> *hash_key,
>  	diag = rte_eth_dev_rss_hash_conf_get(port_id, &rss_conf);
>  	if (diag == 0) {
>  		rss_conf.rss_key = hash_key;
> +		rss_conf.rss_key_len = hash_key_len;
>  		diag = rte_eth_dev_rss_hash_update(port_id, &rss_conf);
>  	}
>  	if (diag == 0)
> --
> 2.31.1

Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>

  reply	other threads:[~2021-09-22 11:25 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22  9:57 [dpdk-dev] [PATCH v2 0/5] Virtio PMD RSS support & RSS fixes Maxime Coquelin
2021-09-22  9:57 ` [dpdk-dev] [PATCH v2 1/5] net/virtio: add initial RSS support Maxime Coquelin
2021-09-22 11:20   ` Andrew Rybchenko
2021-09-22 12:28     ` Maxime Coquelin
2021-09-23  7:35   ` Xia, Chenbo
2021-09-29  9:02     ` Maxime Coquelin
2021-09-22  9:57 ` [dpdk-dev] [PATCH v2 2/5] app/testpmd: fix RSS key length Maxime Coquelin
2021-09-22 11:25   ` Li, Xiaoyun [this message]
2021-09-23  7:52   ` Xia, Chenbo
2021-09-22  9:57 ` [dpdk-dev] [PATCH v2 3/5] app/testpmd: fix RSS type display Maxime Coquelin
2021-09-22 12:01   ` Li, Xiaoyun
2021-09-23  7:59   ` Xia, Chenbo
2021-09-22  9:57 ` [dpdk-dev] [PATCH v2 4/5] net/mlx5: fix RSS RETA update Maxime Coquelin
2021-09-22  9:57 ` [dpdk-dev] [PATCH v2 5/5] app/testpmd: add missing flow types in port info Maxime Coquelin
2021-09-22 11:31   ` Li, Xiaoyun
2021-09-29  7:27     ` Maxime Coquelin

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